Beef Sirloin vs Optimum Nutrition Whey
Side-by-side macro comparison. Beef Sirloin vs Optimum Nutrition Whey per their standard serving sizes.
Optimum Nutrition Whey
per 1 scoop
Macro Comparison Table
| Macro | Beef Sirloin | Optimum Nutrition Whey | Difference |
|---|---|---|---|
| Calories | 206 cal | 120 cal | +72% Beef |
| Protein | 27g | 24g | +13% Beef |
| Carbs | 0g | 3g | -100% Beef |
| Fat | 10g | 1g | +900% Beef |
Differences shown relative to Beef Sirloin. Positive = Beef Sirloin has more.
Quick Take
Beef Sirloin delivers 206 calories per serving with 27g protein, 0g carbs, and 10g fat. Optimum Nutrition Whey delivers 120 calories with 24g protein, 3g carbs, and 1g fat. The most meaningful difference: Optimum Nutrition Whey saves 86 calories per serving — meaningful over a week of meals. Both deliver similar protein density.
When to Pick Each
For Cutting / Weight Loss
When cutting on a tight calorie budget, Optimum Nutrition Whey gives you 86 more calories of headroom per serving — that's room for an extra snack, more vegetables, or a higher-protein second portion. If protein density matters more (which it does for preserving muscle on a deficit), Optimum Nutrition Whey delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Beef Sirloin brings 206 calories — useful when you're chasing a surplus and struggling to eat enough. Beef Sirloin delivers 27g of protein per serving, which directly feeds muscle protein synthesis. The best pick depends on whether you need more total calories or more usable protein.
For Keto / Low-Carb
Both Beef Sirloin and Optimum Nutrition Whey are keto-friendly with under 10g carbs per serving.
Frequently Asked
Which has more protein, Beef Sirloin or Optimum Nutrition Whey?
Beef Sirloin has more protein: 27g vs 24g per serving. That's a difference of 3g.
Which has fewer calories, Beef Sirloin or Optimum Nutrition Whey?
Optimum Nutrition Whey has 120 calories per serving vs 206 calories in Beef Sirloin — a difference of 86 calories.
Is Beef Sirloin or Optimum Nutrition Whey better for keto?
Beef Sirloin is the better keto choice at 0g carbs per serving vs 3g carbs in Optimum Nutrition Whey.
Is Beef Sirloin or Optimum Nutrition Whey better for weight loss?
For weight loss, Optimum Nutrition Whey gives you more calorie flexibility (86 cal less per serving). For preserving muscle during a deficit, Optimum Nutrition Whey delivers more protein per calorie. Most people on cuts benefit from Optimum Nutrition Whey.
Which Is Better for Your Goal?
🔥 Weight Loss
Optimum Nutrition Whey
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Beef Sirloin
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Beef Sirloin
Lower carbohydrate content fits keto and low-carb macros without burning your carb budget.
Both fit most balanced diets. These verdicts reflect macro-only comparisons — taste, satiety, cost, and personal preference also matter.
Find Your Personal Macros
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Other ways Beef Sirloin and Optimum Nutrition Whey stack up:
Full Beef Sirloin guide • Full Optimum Nutrition Whey guide • All comparisons